globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.jcou.2016.04.006
Scopus记录号: 2-s2.0-84966405032
论文题名:
Surprisingly advanced CO2 photocatalytic conversion over thiourea derived g-C3N4 with water vapor while introducing 200-420 nm UV light
作者: Wang H.; Sun Z.; Li Q.; Tang Q.; Wu Z.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 14
起始页码: 143
结束页码: 151
语种: 英语
英文关键词: Carbon nitride ; CO2 reduction ; Photocatalysis ; Thiourea ; UV light
Scopus关键词: Carbon nitride ; Efficiency ; Irradiation ; Light ; Nitrides ; Photocatalysis ; Thioureas ; Ultraviolet radiation ; Urea ; Electron-hole separation ; Graphitic carbon nitrides ; Irradiation conditions ; Light irradiations ; Photocatalytic reduction ; Photoexcited electrons ; Visible-light activity ; Visible-light irradiation ; Carbon dioxide
英文摘要: 200-420 nm UV light was for the first time introduced for CO2 photocatalytic reduction over graphitic carbon nitride (g-C3N4). It was surprisingly found that thiourea derived g-C3N4 (TCN), which showed inferior activity in CO2 reduction under visible light irradiation, exhibited more remarkable CO2 conversion efficiency under >200 nm light irradiation compared to g-C3N4 synthesized from urea (UCN) and commercial TiO2 (P25). Also, the highest selectivity to CO2 conversion was observed over TCN while P25 showed the most prominent H2 production followed by UCN. Through a series of characterizations, the more abundant -NHx species that were responsible for CO2 activation, the enhanced reducing ability of photo-excited electrons under UV light and the higher photo-exited electron-hole separation efficiency were supposed to contribute to the excellent CO2 photocatalytic reduction activity of TCN under >200 nm UV-vis light irradiation, whilst its visible-light activity was relatively weak because of its limited surface area. Further, TCN performed a wonderful stability with a good record of circle tests in this irradiation condition. © 2016 Elsevier Ltd. All rights reserved.
资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52911
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Recommended Citation:
Wang H.,Sun Z.,Li Q.,et al. Surprisingly advanced CO2 photocatalytic conversion over thiourea derived g-C3N4 with water vapor while introducing 200-420 nm UV light[J]. Journal of CO2 Utilization,2016-01-01,14
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